OHNO aka. Espen Henningsen (b. 1981, Holmestrand / Norway) is a Norwegian artist based in Oslo, Norway. Espen started with graffiti at a young age. Later he also took a bachelor degree from Oslo Academy of fine art from 2003 - 2006. His admiration for graffiti was still there, and he has continued.

He has participated in several group exhibitions - among other "Lights on" at Astrup Fearnley Museum of modern art. OHNO has later shifted focus on commission- and decorating work for public and private firms. His public works are to be seen in Oslo, Bergen, Trondheim on skate fields, in neighborhoods and other public and private places.

Espen is a talented artist working with and within several techniques. Silk screen, installations, lithography are some of his favourites.